Anterior Thigh

Quadriceps: Main action, powerful knee extensors, used for climbing, running and jumping.

4 (Quad) Heads:

>>> RECTUS FEMORIS - extends knee and flexes thigh at hip

>>> VASTUS LATERALIS - extends & stabilizes knee

>>> VASTUS MEDIALIS - extends knee supports patella

>>> VASTUS INTERMEDIUS - extends knee (is hiding behind the rectus femoris)